Marine centrifugal bubble generator and method of operation

Abstract

The application discloses a marine centrifugal bubble generator, which comprises a cylinder, a pipeline assembly arranged partially in the cylinder and used for conveying a gas-liquid mixture into the cylinder and differentiating the gas-liquid mixture into a main flow and a plurality of thin sub-flows, a first moving assembly arranged in the cylinder and used for rotating and centrifugally dispersing the main flow to an inner side wall of the cylinder, and a second moving assembly arranged around the cylinder and close to the side wall of the cylinder and used for cutting and crushing the main flow and the thin sub-flows dispersed to the inner side wall of the cylinder. The application is provided with a multi-stage crushing structure in the device, can perform multi-stage and multi-time dispersion and crushing on a high-pressure gas-liquid mixture, can quickly and continuously form a large amount of micro-nano bubbles, and improves propelling efficiency. A working method of the marine centrifugal bubble generator can perform multi-time crushing and cutting on the gas-liquid mixture, can continuously generate a large amount of micro-nano bubbles with smaller diameters, simultaneously avoids the phenomenon that the micro-nano bubbles are gathered and formed into groups, and provides final propelling efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of marine gas-liquid two-phase propulsion, specifically relating to a marine centrifugal bubble generator and its working method. Background Technology

[0002] Currently, the mainstream propulsion method for underwater vehicles is propulsion, a traditional underwater propulsion method used in the vast majority of underwater vehicles. However, under high-speed navigation conditions, the high-speed rotation of the propeller leads to cavitation, which reduces the thrust of the propeller and causes severe cavitation damage. Therefore, propulsion greatly limits the speed of underwater vehicles, which cannot meet the requirements of high-speed maneuvering of modern ships.

[0003] Based on the limitations of propeller propulsion, and drawing inspiration from the working principle of jet engines in air, some scholars have proposed the concept of underwater jet propulsion. Underwater jet propulsion mainly includes waterjet propulsion, metal / water reactive ramjet propulsion, and underwater jet propulsion. Pump-pressurized waterjet propulsion systems are simple in structure, have high propulsion efficiency, and strong anti-cavitation capabilities. However, their thrust disappears during turns, and they have a large mass and complex propulsion pump blades. Furthermore, the effects of cavitation and erosion still exist at high speeds. Metal / water reactive ramjet engines can significantly improve the performance of underwater propulsion systems and are suitable for high-speed underwater vehicles. Among them, aluminum-water propulsion systems can serve as ideal propulsion systems for ultra-high-speed, long-range supercavitating underwater weapons, but they suffer from low specific impulse and limited range.

[0004] Based on the limitations of the aforementioned propulsion methods, an underwater bubble two-phase ramjet propulsion system can overcome these shortcomings. Its main principle is to utilize the gradual expansion of bubbles against the pressure gradient, which then do work on the water flow, accelerating it and propelling the ship forward. While exhibiting excellent performance when applied to high-speed ships, actual operation has revealed several issues: bubbles in the two-phase fluid are prone to contact, deformation, and agglomeration. This causes tiny bubbles to easily coalesce into larger bubbles, reducing the internal pressure. Furthermore, larger bubbles tend to adhere to the inner wall of the pipe, hindering their movement with the water flow. Consequently, the number of tiny bubbles capable of breaking up and generating thrust is reduced, leading to decreased propulsion efficiency.

[0005] For example, the patent with application number 2016100537523 and patent name "bubble generating device" utilizes a high-speed rotating gas-liquid mixture that is ejected from the outlet. The rotating liquid flow mixed with the gas column is thrown out of the outlet under the action of centrifugal force. Affected by the resistance of the relatively stationary liquid outside, the rotation is rapidly weakened and destroyed, generating a large number of bubbles. However, the bubbles generated by this scheme are relatively large in diameter, and adjacent bubbles are prone to coalescing, so it cannot be applied to the propulsion system. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention aims to provide a marine centrifugal bubble generator and its working method, which aims to solve the problem that conventional underwater bubble two-phase ramjet propulsion systems in the prior art are prone to contact, deformation and agglomeration of bubbles in the two-phase fluid generated during the propulsion process, resulting in low propulsion efficiency.

[0007] This invention is achieved through the following technical solution:

[0008] A marine centrifugal bubble generator includes a cylinder, a pipe assembly, a first motion assembly, and a second motion assembly. The pipe assembly includes an inlet pipe and a branch pipe, with the branch pipe located inside the cylinder. The inlet pipe is connected to the branch pipe and extends out of the cylinder. The first motion assembly includes a rotating component and centrifugal blades. The rotating component is located inside the cylinder and spaced a certain distance from the pipe assembly. Both the rotating component and the pipe assembly are located on the vertical axis of the cylinder and arranged in the order of gas-liquid mixture flow. The second motion assembly includes an annular support and cutting components. The annular support is located at the bottom of the cylinder. Several cutting components are arranged on the annular support. Each cutting component includes a first blade support, a second blade support, a connecting rod, and a blade. The first blade support of the lowest cutting component is located on the annular support, and the second blade support is located above the first blade support. The connecting rod is rotatably positioned between the first and second blade supports. The blade is located on the connecting rod. The second blade support of the lowest cutting component is connected to the first blade support of the corresponding upper cutting component. The blade has a cross-shaped structure.

[0009] To optimize the above technical solution, the specific measures also include:

[0010] Furthermore, the cylinder includes a crushing zone and a spraying zone connected sequentially in the direction of gas-liquid mixture flow. The crushing zone is a hollow cylindrical structure, and a baffle is provided at the water inlet end of the crushing zone. The baffle has a notch. The spraying zone is a hollow frustum-shaped structure, and the cross-sectional diameter of the spraying zone decreases uniformly along the water flow direction.

[0011] Furthermore, the diversion pipe is inserted into the notch and positioned at the lower end of the inlet of the crushing zone. The diversion pipe has a hollow frustum-shaped structure and includes an inlet and an outlet. The cross-sectional diameter of the diversion pipe decreases uniformly from the inlet to the outlet. Several diversion holes are provided on the side wall of the diversion pipe. The inlet of the diversion pipe is connected to the inlet pipe, and a mounting base is provided at the end of the inlet pipe away from the diversion pipe.

[0012] Furthermore, the ratio between the diameter of the inlet pipe, the diameter of the outlet of the diversion pipe, and the diameter of the diversion hole is 1:(0.65-0.7):(0.01-0.02).

[0013] Furthermore, the rotating component includes an annular support, blades, a centrifugal rod, a fixed base, and a motor. The annular support is horizontally rotatably mounted on the side wall of the spray zone. The blades are inclined at a certain angle, and multiple blades are circumferentially distributed within the annular support. One end of each blade is connected to the inner side wall of the annular support, and the other end of each blade is connected to the side wall of the centrifugal rod. The motor is connected to the end of the centrifugal rod away from the annular support, and the motor is connected to the inner wall of the cylinder through the fixed base.

[0014] Furthermore, the multiple centrifugal blades are distributed in a spiral structure on the centrifugal rod, and the spiral direction of the multiple centrifugal blades is consistent.

[0015] Furthermore, the annular support is disposed on the baffle, and the annular support is provided with a number of cutting layers from bottom to top. Each cutting layer includes an inner ring and an outer ring distributed in an annular shape. The inner ring and the outer ring are each composed of a number of cutting parts, and the corresponding cutting parts are stacked on top of each other.

[0016] Furthermore, a spiral track is provided near the inner wall of the cylinder crushing zone, with the lower end of the spiral track set on a baffle plate, and the spiral track is located between the inner wall of the cylinder crushing zone and the cutting piece.

[0017] Furthermore, a flow-breaking cone is provided on the outside of the motor, with the tip of the flow-breaking cone facing the outlet of the diversion pipe.

[0018] A method for operating a marine centrifugal bubble generator includes the following steps:

[0019] The high-pressure gas-liquid mixture is initially diverted from the branch pipe through the water inlet pipe, forming a main stream and several tributaries;

[0020] The main stream is broken up and dispersed in all directions by using the flow-breaking cone. A part of the main stream continues to impact and reach the first motion component area, while several tributaries and another part of the main stream reach the second motion component area.

[0021] The speed of the motor is adjusted according to the flow rate of the gas-liquid mixture, which drives the centrifugal rod of the first motion component to rotate, thereby causing the main stream reaching the area of ​​the first motion component to rotate. The rotation of the centrifugal rod causes the centrifugal blades to break up the gas-liquid mixture and generate tiny bubbles.

[0022] The cutting component is driven by the impact force of several tributaries and another main stream in the second motion component area, causing the blade of the cutting component to rotate between the first blade support and the second blade support, thereby generating tiny bubbles in the gas-liquid mixture.

[0023] The rotating blades move towards the jet zone and merge the tiny bubbles, which are then cut and broken up again to generate micro-nano bubbles.

[0024] The beneficial effects of this invention are:

[0025] Compared to existing technologies, the marine centrifugal bubble generator of this invention features a multi-stage crushing structure inside the device. This structure performs multi-stage, multi-level dispersion and crushing of the high-pressure gas-liquid mixture, enabling the rapid and continuous formation of a large number of micro- and nano-bubbles while preventing them from agglomerating. Furthermore, a spiral track near the inner wall of the cylinder spirally transports the micro- and nano-bubbles to the stern of the cylinder for convergence, thus improving propulsion efficiency.

[0026] This device can continuously generate micro- and nano-bubbles. After being ejected from the bubble outlet, these micro- and nano-bubbles gradually expand and burst under the action of the reverse pressure gradient, doing work on the water flow and generating thrust. At the same time, some micro- and nano-bubbles will adhere to the surface of the hull under the action of the reaction force, reducing the hull's running resistance.

[0027] This working method can perform multiple fragmentation and cutting of gas-liquid mixtures, continuously generating a large number of micro- and nano-bubbles with smaller diameters, while avoiding the aggregation and clumping of micro- and nano-bubbles, thus improving the final propulsion efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a marine centrifugal bubble generator according to the present invention.

[0029] Figure 2 yes Figure 1 A partial internal structure diagram.

[0030] Figure 3 yes Figure 1 A schematic diagram of the internal structure of the spiral track, the first motion component, and the cylinder.

[0031] Figure 4 This is a partial structural diagram of the first motion component.

[0032] Figure 5 yes Figure 2 A partial structural diagram of the middle baffle and the second motion component.

[0033] Figure 6 yes Figure 2 A schematic diagram of the structure of the cutting component.

[0034] The attached figures are labeled as follows: cylinder 10, crushing zone 11, baffle 111, notch 112, jetting zone 12, pipe assembly 20, water inlet pipe 21, diversion port 22, water inlet 221, water outlet 222, diversion hole 223, mounting base 23, first motion assembly 30, rotating component 31, annular support 311, blade 312, centrifugal rod 313, fixed base 314, motor 315, centrifugal blade 32, flow-breaking cone 33, second motion assembly 40, annular support 41, cutting component 42, first blade support 421, second blade support 422, connecting rod 423, blade 424, and spiral track 50. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0038] Example 1

[0039] Reference Figures 1-6 This embodiment provides a marine centrifugal bubble generator, which can perform multi-stage and multi-level dispersion and crushing of high-pressure gas-liquid mixtures to rapidly and continuously form a large number of micro-nano bubbles.

[0040] Reference Figures 1-6 A marine centrifugal bubble generator includes: a cylinder 10; a pipe assembly 20, partially disposed inside the cylinder 10, for conveying a gas-liquid mixture into the cylinder 10 and dividing it into a main stream and multiple fine streams; a first motion assembly 30, disposed inside the cylinder 10, for centrifugally dispersing the main stream to the inner wall of the cylinder 10; and a second motion assembly 40, disposed around the inside of the cylinder 10 near the inner wall of the cylinder 10, for cutting and breaking the main stream and fine streams dispersed to the inner wall of the cylinder 10.

[0041] The cylinder 10 includes a crushing zone 11 and a spraying zone 12 connected in sequence according to the flow direction of the gas-liquid mixture. The crushing zone 11 is a hollow cylindrical structure. A baffle 111 is provided at the water inlet end of the crushing zone 11. A notch 112 is provided on the baffle 111. The spraying zone 12 is a hollow frustum-shaped structure. The cross-sectional diameter of the spraying zone 12 decreases uniformly along the water flow direction.

[0042] After the water flows into the cylinder 10, it is first broken in the crushing zone 11 to generate a large number of micro-nano bubbles. Then, a large number of dispersed micro-nano bubbles enter the spray zone 12 and converge for spraying, thereby improving the propulsion efficiency.

[0043] The pipe assembly 20 includes an inlet pipe 21 and a diversion port 22. The diversion port 22 is located inside the cylinder and is inserted into the notch 112 at the lower end of the inlet 221 in the crushing zone 11. The diversion port 22 has a hollow frustum-shaped structure and includes an inlet 221 and an outlet 222. The cross-sectional diameter of the diversion port 22 decreases uniformly along the direction from the inlet 221 to the outlet 222. Several diversion holes 223 are opened on the side wall of the diversion port 22. The inlet 221 of the diversion port 22 is connected to the inlet pipe 21. Next, a mounting base 23 is provided at the end of the inlet pipe 21 away from the diversion port 22. The device can be fixedly installed at the required position via the mounting base 23. In this embodiment, it is installed at the end of the pusher. The ratio between the diameter of the inlet pipe 21, the diameter of the outlet 222 of the diversion port 22, and the diameter of the diversion hole 223 is 1:(0.65-0.7):(0.01-0.02). This size ratio minimizes the resistance encountered by the high-pressure gas-liquid mixture and can also divide it into some fine branches, which facilitates the next crushing process. In addition, when the high-pressure gas-liquid mixture passes through the diversion hole, the speed at which the mixture flows into the device is slowed down to a certain extent, thereby reducing the impact of severe impact on the device.

[0044] When the pipeline assembly 20 is in operation, the high-pressure gas-liquid mixture first enters the diversion port 22 through the inlet pipe 21, and then is dispersed at the diversion port 22. Part of it flows outward through the diversion holes 223 on the side wall of the diversion port 22, and the other part is sprayed into the cylinder 10 through the outlet 222 of the diversion port 22. This initial diversion reduces the impact force of the main stream, facilitating centrifugal crushing of the main stream. At the same time, multiple fine diversions can better facilitate the subsequent crushing process.

[0045] The first motion component 30 includes a rotating element 31 and centrifugal blades 32. The rotating element 31 is disposed inside the cylinder 10 and spaced a certain distance from the pipe assembly 20. Both the rotating element 31 and the pipe assembly 20 are located on the vertical axis of the cylinder 10. The rotating element 31 includes an annular support 311, blades 312, a centrifugal rod 313, a fixed seat 314, and a motor 315. The annular support 311 is horizontally rotatably disposed on the side wall of the spray zone 12. The blades 312 are inclined at a certain angle, and multiple blades 312 are circumferentially distributed inside the annular support 311. One end of the blade 312 is connected to the inner side wall of the annular support 311, and the other end of the blade 312 is connected to the side wall of the centrifugal rod 313. The inclination angle of the blades 312 can be set as needed to facilitate the accelerated spraying of the high-pressure gas-liquid mixture. The motor 315 is connected to the end of the centrifugal rod 313 away from the annular support 311. The motor 315 is connected to the inner wall of the cylinder through the fixed seat 314, and the output shaft of the motor 315 is inserted into the centrifugal rod.

[0046] To improve the centrifugal effect of the centrifugal rod 313, multiple centrifugal blades 32 are distributed in a spiral structure on the centrifugal rod 313, and the spiral direction of the multiple centrifugal blades 32 is consistent.

[0047] When the first motion component 30 is working, the motor 315 first drives the centrifugal rod 313 to rotate, the centrifugal rod 313 drives the blades 312 to rotate synchronously, and the centrifugal blades 32 set on the centrifugal rod 313 also rotate synchronously with the centrifugal rod 313.

[0048] The specific process of the high-pressure gas-liquid mixture being broken and centrifuged under the action of the first motion component 30 is as follows: The high-pressure gas-liquid mixture ejected from the other end of the diversion pipe 22 flows toward the centrifugal rod 313. While the centrifugal rod 313 rotates, it drives the centrifugal blades 32 and the blades 312 to rotate. The main flow near the centrifugal blades 32 and the blades 312 is broken and accelerated by the centrifugal blades 32, thereby generating microbubbles. The generated microbubbles are dispersed and flow toward the inner wall of the cylinder 10 under the action of centrifugal force. The remaining water flow passes through the first motion component 30 and is ejected outward. During the outward ejection process, the microbubbles are carried out simultaneously. When passing the blades 312, they are broken and accelerated again. When the bubbles are ejected through the ejection zone 12, the bubbles enter the external water body. Due to the change in pressure, the micro-nano bubbles are rapidly broken to form ultra-high-speed micro-jet, thereby generating thrust and further improving the propulsion force of navigation.

[0049] In actual operation, the main flow from the diversion port 22 will exert a strong impact on the motor 315. In order to protect the motor 315 and extend its service life, a flow-breaking cone 33 is provided on the outside of the motor 315. The tip of the flow-breaking cone 33 faces the diversion port 22, which can make the main flow flow along the side wall of the flow-breaking cone 33, thus reducing the impact on the motor 315.

[0050] Example 2

[0051] Reference Figure 2 , Figures 5-6 This embodiment provides a marine centrifugal bubble generator that can further cut microbubbles to generate micro-nano bubbles, thereby improving propulsion.

[0052] The difference between this embodiment and Embodiment 1 is that: a marine centrifugal bubble generator further includes a second motion component 40, which includes several annular supports 41 and cutting elements 42. The annular supports 41 are disposed at the bottom of the inner part of the cylinder, and several cutting elements 42 are provided on each annular support 41. The cutting elements 42 can rotate relative to the annular supports 41 to cut the water flow. This facilitates the further cutting of microbubbles into micro-nanobubbles.

[0053] An annular support 41 is mounted on the baffle 111. Several cutting layers are arranged on the annular support 41 from bottom to top. Each cutting layer includes an inner ring and an outer ring arranged in a ring. When the high-pressure gas-liquid mixture passes through the inner ring, it undergoes the first cutting action. To prevent bubbles from agglomerating and forming larger bubbles, a double-layer structure of inner and outer rings is used to perform multiple cuts on the bubbles, while simultaneously generating smaller micro- and nano-bubbles. Both the inner and outer rings are composed of several cutting elements 42, with corresponding cutting elements 42 stacked on top of each other. The height of the vertically arranged cutting layers is consistent with the height of the breaking zone 11 of the cylinder 10, maximizing the coverage of the area where micro-bubbles are generated.

[0054] The cutting component 42 includes a first blade support 421, a second blade support 422, a connecting rod 423, and a blade 424. The first blade support 421 of the bottommost cutting component 42 is disposed on an annular support 41, the second blade support 422 is disposed above the first blade support 421, the connecting rod 423 is rotatably disposed between the first blade support 421 and the second blade support 422, and the blade 424 is disposed on the connecting rod 423. The second blade support 422 of the bottommost cutting component 42 is connected to the first blade support 421 of the adjacent upper corresponding cutting component 42, and the blade 424 has a cross-shaped structure.

[0055] When the cutting component 42 is working, under the centrifugal force of the water flow inside the cylinder 10, the connecting rod 423 will rotate. The direction of the rotation is the same as the direction of the centrifugal force. While the connecting rod 423 is rotating, it will drive the blade 424 to rotate synchronously. Then, when the microbubbles pass through the cutting component 42, the blade 424 will cut the microbubbles again to produce micro-nano bubbles with even smaller diameters.

[0056] Example 3

[0057] Reference Figure 3This embodiment provides a marine centrifugal bubble generator that can accelerate the outward flow rate of micro- and nano-bubbles.

[0058] The difference between this embodiment and embodiment 1 is that: a marine centrifugal bubble generator is provided with a spiral track 50 near the inner wall of the crushing zone 11 of the cylinder, the lower end of the spiral track 50 is provided on the baffle 111, and the spiral track 50 is located between the inner wall of the crushing zone 11 of the cylinder 10 and the cutting piece 42.

[0059] Under the action of centrifugal force, the micro- and nano-bubbles generated by passing through the cutting piece 42 will eventually reach the inner sidewall of the spiral track 50, and then move outward along the spiral track 50. The spiral track can accelerate the flow rate of the micro- and nano-bubbles.

[0060] Example 4

[0061] A method for operating a marine centrifugal bubble generator, characterized by comprising the following steps:

[0062] The high-pressure gas-liquid mixture is initially diverted from the branch pipe through the water inlet pipe, forming a main stream and several tributaries;

[0063] The main stream is broken up and dispersed in all directions by using the flow-breaking cone. A part of the main stream continues to impact and reach the first motion component area, while several tributaries and another part of the main stream reach the second motion component area.

[0064] The speed of the motor is adjusted according to the flow rate of the gas-liquid mixture, which drives the centrifugal rod of the first motion component to rotate, thereby causing the main stream reaching the area of ​​the first motion component to rotate. The rotation of the centrifugal rod causes the centrifugal blades to break up the gas-liquid mixture and generate tiny bubbles.

[0065] The cutting component is driven by the impact force of several tributaries and another main stream in the second motion component area, causing the blade of the cutting component to rotate between the first blade support and the second blade support, thereby generating tiny bubbles in the gas-liquid mixture.

[0066] The rotating blades move towards the jet zone and merge the tiny bubbles, which are then cut and broken up again to generate micro-nano bubbles.

[0067] This working method involves multiple fragmentation and cutting of the gas-liquid mixture, which can continuously generate a large number of micro- and nano-bubbles with smaller diameters, while avoiding the aggregation and clumping of micro- and nano-bubbles, thus improving the final propulsion efficiency.

[0068] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A marine centrifugal bubble generator, located at the end of a propeller, characterized in that: The system includes a cylinder, a pipe assembly, a first motion assembly, and a second motion assembly. The pipe assembly includes an inlet pipe and a branch pipe, with the branch pipe located inside the cylinder. The inlet pipe connects to the branch pipe and extends out of the cylinder. The first motion assembly includes a rotating component and centrifugal blades. The rotating component is located inside the cylinder and spaced a certain distance from the pipe assembly. Both the pipe assembly and the rotating component are located on the vertical axis of the cylinder and arranged in the order of gas-liquid mixture flow. The second motion assembly includes an annular support and cutting components. The annular support is located at the bottom of the cylinder and has several cutting components. Each cutting component includes a first blade support, a second blade support, a connecting rod, and a blade. The first blade support of the lowest cutting component is located on the annular support, and the second blade support is located above the first blade support. A connecting rod is rotatably mounted between a first blade support and a second blade support. The blade is mounted on the connecting rod. The second blade support of the lowest layer of the cutting element is connected to the first blade support of the corresponding upper layer of the cutting element. The blade has a cross-shaped structure. The cylinder includes a crushing zone and a spraying zone connected sequentially according to the flow direction of the gas-liquid mixture. A baffle is provided at the water inlet end of the crushing zone. A notch is provided on the baffle. The cross-sectional diameter of the spraying zone decreases uniformly along the water flow direction. A diversion pipe is inserted into the notch and is located at the lower end of the water inlet of the crushing zone. The diversion pipe has a hollow frustum-shaped structure. The diversion pipe includes an inlet and an outlet. The cross-sectional diameter of the diversion pipe decreases uniformly along the direction from the inlet to the outlet. Several diversion holes are provided on the side wall of the diversion pipe. The inlet of the diversion pipe is connected to the water inlet pipe.

2. A marine centrifugal bubble generator according to claim 1, characterized in that: The crushing zone is a hollow cylindrical structure, and the spraying zone is a hollow frustum-shaped structure.

3. A marine centrifugal bubble generator according to claim 2, characterized in that: A mounting base is provided at the end of the water inlet pipe away from the branch pipe opening.

4. A marine centrifugal bubble generator according to claim 3, characterized in that: The ratio between the diameter of the inlet pipe, the diameter of the outlet of the branch pipe, and the diameter of the branch hole is 1:(0.65-0.7):(0.01-0.02).

5. A marine centrifugal bubble generator according to claim 4, characterized in that: The rotating component includes an annular support, blades, a centrifugal rod, a fixed base, and a motor. The annular support is horizontally rotatably mounted on the side wall of the spray zone. The blades are inclined at a certain angle, and multiple blades are circumferentially distributed within the annular support. One end of each blade is connected to the inner side wall of the annular support, and the other end is connected to the side wall of the centrifugal rod. The motor is connected to the end of the centrifugal rod away from the annular support, and the motor is connected to the inner wall of the cylinder through the fixed base.

6. A marine centrifugal bubble generator according to claim 1, characterized in that: Multiple centrifugal blades are distributed in a spiral structure on the centrifugal rod, and the spiral direction of the multiple centrifugal blades is consistent.

7. A marine centrifugal bubble generator according to claim 1, characterized in that: The annular support is mounted on the baffle plate. The annular support has several cutting layers arranged from bottom to top. Each cutting layer includes an inner ring and an outer ring arranged in a ring. The inner ring and the outer ring are each composed of several cutting parts, and the corresponding cutting parts are stacked on top of each other.

8. A marine centrifugal bubble generator according to claim 7, characterized in that: A spiral track is provided near the inner wall of the cylinder crushing zone, with the lower end of the spiral track set on a baffle plate. The spiral track is located between the inner wall of the cylinder crushing zone and the cutting piece.

9. A marine centrifugal bubble generator according to claim 5, characterized in that: A flow-breaking cone is provided on the outside of the motor, with the tip of the flow-breaking cone facing the outlet of the diversion pipe.

10. The operating method of the marine centrifugal bubble generator according to claim 9, characterized in that, Includes the following steps: The high-pressure gas-liquid mixture is initially diverted from the branch pipe through the water inlet pipe, forming a main stream and several tributaries; The main stream is broken up and dispersed in all directions by using the flow-breaking cone. A part of the main stream continues to impact and reach the first motion component area, while several tributaries and another part of the main stream reach the second motion component area. The speed of the motor is adjusted according to the flow rate of the gas-liquid mixture, which drives the centrifugal rod of the first motion component to rotate, thereby causing the main stream reaching the area of ​​the first motion component to rotate. The rotation of the centrifugal rod causes the centrifugal blades to break up the gas-liquid mixture and generate tiny bubbles. The cutting component is driven by the impact force of several tributaries and another main stream in the second motion component area, causing the blade of the cutting component to rotate between the first blade support and the second blade support, thereby generating tiny bubbles in the gas-liquid mixture. The rotating blades move towards the jet zone and merge the tiny bubbles, which are then cut and broken up again to generate micro-nano bubbles.

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